Serena injures knee, pulls out of semifinal match
2008/07/19 16:34:00 @Sports News: CBSSports.com
Top-seeded Serena Williams injured her left knee and pulled out of the Bank of the West Classic on Saturday, becoming the third singles player on the U.S. Olympic women's tennis team with a knee injury. [ VIEW FULL COVERAGE @Sports News: CBSSports.com ]